TY  - BOOK
AU  - Bentley, K. W. 
TI  - The natural pigments
T2  - The chemistry of natural products
U1  - 547.86 
PY  - 1960///
CY  - London
PB  - Interscience Publishers, Inc
KW  - Pigments
KW  - Pterins
KW  - Xanthones
ER  -